IowaRV9Dreamer
Well Known Member
The GA 56 GPS antenna calls for a fillet of "appropriate sealant" to be applied after the antenna is mounted on a painted surface. I've seen A&Ps use a grey RTV type material. I'd like to find a white RTV.
Spruce sells Dow Corning Silastic 732 in white for $6, but the datasheet says "DOW CORNING 732 Multi-Purpose Sealant releases a small amount of acetic acid during cure. This may cause corrosion on some metallic parts or substrates, especially in direct contact or when the cure is carried out in a totally enclosed configuration which would not allow cure by-products to escape."
I'm not sure this totally applies, since the RTV would be on a painted surface (no direct contact) and would not be "totally enclosed"
Spruce also sells a $29
tube of RTV-3145 (in clear or grey only). I think this is what I saw the A&P using. It is billed as "non-corrosive".
Has anyone used the 732 sealant, or maybe has a better alternative (maybe at Lowes?)?
Spruce sells Dow Corning Silastic 732 in white for $6, but the datasheet says "DOW CORNING 732 Multi-Purpose Sealant releases a small amount of acetic acid during cure. This may cause corrosion on some metallic parts or substrates, especially in direct contact or when the cure is carried out in a totally enclosed configuration which would not allow cure by-products to escape."
I'm not sure this totally applies, since the RTV would be on a painted surface (no direct contact) and would not be "totally enclosed"
Spruce also sells a $29
Has anyone used the 732 sealant, or maybe has a better alternative (maybe at Lowes?)?